British tuner Mountune is an expert at extracting more performance from Ford Motor Company [NYSE:F] products.

And in recent years we’ve seen the company come out with upgrades backed by the factory, including here in the United States where it has a local arm.

Now Mountune has teamed up with Ford Performance to develop some upgrades for the 2016 Focus RS.

Mountune is already selling some mild upgrades for the car. These are part of its Phase One package and include items for the intake as well as to provide shorter gear-shifts and inhibit excessive engine movement. There is also a COBB Accessport for the car.

The latest upgrades, known as Phase Two, sees output from the car’s turbocharged 2.3-liter inline-4 boosted to 370 horsepower and 376 pound-feet of torque. That’s up from 350 hp and 350 lb-ft in the standard car and sees the 0-62 mph time drop from 4.7 seconds to 4.5 seconds. Top speed remains 165 mph.

The Phase Two package includes a high-performance air filter, bespoke alloy crossover duct with high-performance silicone hoses, an upgraded air re-circulation valve and revised software tuning for the engine ECU.

Development, which includes Nürburgring testing, is ongoing so expect more upgrades in the future.

Crucially, the upgrades can be installed at Ford dealers and are covered by the factory warranty. Pricing and availability in the United States are yet to be announced.